package colexercise01;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class SortDemo {
    public static void main(String[] args) {
        Random random = new Random();
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(random.nextInt(100));
        }
        System.out.println("list原始数据:"+list);

        Collections.sort(list);
        System.out.println("list排序后的数据:"+list);

        Collections.reverse(list);
        System.out.println("list反转后的数据:"+list);











//        Random random = new Random();
//        List<Integer> list = new ArrayList<>();
//        for (int i = 0; i < 10; i++) {
//            list.add(random.nextInt(100));
//        }
//        System.out.println("list原始数据:"+list);
//
//        Collections.sort(list);
//        System.out.println("list排序后的数据:"+list);
//
//        Collections.reverse(list);
//        System.out.println("list反转后的数据:"+list);

    }
}
